Çinlar subgrid scale model for large eddy simulation

R. Kara and M. Çağlar

Applied Mathematics and Computation, 2018, vol. 322, issue C, 89-99

Abstract: We construct a new subgrid scale (SGS) stress model for representing the small scale effects in large eddy simulation (LES) of incompressible flows. We use the covariance tensor for representing the Reynolds stress and include Clark’s model for the cross stress. The Reynolds stress is obtained analytically from Çinlar random velocity field, which is based on vortex structures observed in the ocean at the subgrid scale. The validity of the model is tested with turbulent channel flow computed in OpenFOAM. It is compared with the most frequently used dynamic Smagorinsky and one-equation eddy SGS models through DNS data.

Keywords: Stochastic flows; Large eddy simulation; Homogeneous turbulence; Subgrid model; Channel flow (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:eee:apmaco:v:322:y:2018:i:c:p:89-99

DOI: 10.1016/j.amc.2017.11.033

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